Rengoku: Decent Into Hell
(Summary)

A man and his girlfriend, both around twenty years of age, are walking through a crowded street in New York City. They are holding hands, obviously in love and enjoying the unusually warm day. At the same time a certain CEO is walking the streets as well. His company is not well known – yet – and so he can enjoy is anonymity for the time being. However, he is not obscure enough. A man, knowing of his plans, jumps out of a local restaurant with a stomach covered in explosives. His intent is only to kill one man and himself, and he dashes at the CEO. Our man, the man with his girlfriend, lets go of her hand and dives in front of the CEO, bear-hugging the bomber and tackling him to the sidewalk. The bomber is trapped underneath the man, and the impact on his hand causes him to trigger the bomb. The bottom half of both men is obliterated. Every bystander cries out and rushes to safety... Except the girlfriend and CEO who know the danger is passed... The CEO makes a phone call, and the man's life begins its decent into hell...

The man wakes in his hospital bed, not knowing why he is there or what happened. He tries to move and finds he can sit up with ease. He shakes his head, blinks twice, and suddenly remembers everything up to the explosion. He throws off the blanket... And sees the first legs of an A.D.A.M. unit. He is now the first ever android, and only one in what will become many, many more. He will learn about his new body. He will remember his girlfriend, and marry her in his new body. He will have faith in the company that gave him his life back. But he will learn how they plan to start a war with these machines. He will use the only advantage he has over the rest of the mass produced A.D.A.M.'s: his humanity. He will come to be known as GRAM, a machine with a self, and a sole survivor of the human race.

This is the story of The Tower Of Purgatory. This is the story of GRAM. This is Rengoku.